I would love to just see Logan, Storm, Rogue, Kitty, Colossus, and Magneto alive when the future scenes start. I hate Shawn Ashmore's Iceman, so I want him dead already. Also throw in Beast and Angel as dead since we already have a 60s Beast and no emotional attachment to Warren. With Jean, Scott, and Xavier already dead from X3, this would actually be really really close to the comics version and feature all the characters we care about (and the ones that would be amazing to see in battle with the Sentinels).